Propagation characteristics of thermoelastic wave in unsaturated soil

doi:10.16285/j.rsm.2019.0738

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Propagation characteristics of thermoelastic wave in unsaturated soil
	Liu, Hong-Bo 1; Zhou, Feng-Xi 1,2; Yue, Guo-Dong 1; Hao, Lei-Chao 1
刊名	Yantu Lixue/Rock and Soil Mechanics
	2020-05-10
卷号	41 期号:5 页码:1613-1624
关键词	Acoustic wave velocity Expansion Heat conduction Hydrocarbon seepage Liquefied gases Porous materials Shear waves Soils Thermal expansion Thermoelasticity Wave propagation Attenuation coefficient Dispersion characteristics Mass balance equations Non-Fourier heat conduction Propagation characteristics Thermal expansion coefficients Thermo-physical parameters Unsaturated porous medium
ISSN号	10007598
DOI	10.16285/j.rsm.2019.0738
英文摘要	Based on the research results of unsaturated porous medium, considering the influence of thermal effect and porosity fluid tortuosity, the propagation characteristics of thermoelastic wave in unsaturated soil are studied in this paper. The thermoelastic wave equations of the problem are established by the mass balance equation, seepage flow equations of continuity and momentum balance, and generalized non-Fourier heat conduction law of the solid-liquid-gas three-phase medium coupled with heat in unsaturated soil. By introducing the potential function, the dispersion characteristic equation of thermoelastic wave in unsaturated soil is theoretically derived. The variations of the wave velocity and attenuation coefficient of several types of thermoelastic waves with the thermophysical parameters such as tortuosity, thermal expansion coefficient and medium temperature, are analyzed in numerical examples. The results show that the increase of pore water tortuosity causes the decrease of wave velocity of P1 wave, P3 wave and S wave, while the increase of pore gas tortuosity only causes the decrease of wave velocity of P2 wave. The increase of thermal expansion coefficient causes the increase of P1 wave velocity and the decrease of thermal wave (T wave) velocity. The rise of medium temperature causes the increase of wave velocity of various thermoelastic waves. The variations of frequency, thermal expansion coefficient and medium temperature have a great influence on the attenuation coefficients of various thermoelastic waves, and these variations cannot be ignored. © 2020, Science Press. All right reserved.
WOS研究方向	Engineering
语种	中文
出版者	Academia Sinica
WOS记录号	WOS:000557856000018
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150663]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China; 2.Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China
推荐引用方式 GB/T 7714	Liu, Hong-Bo,Zhou, Feng-Xi,Yue, Guo-Dong,et al. Propagation characteristics of thermoelastic wave in unsaturated soil[J]. Yantu Lixue/Rock and Soil Mechanics,2020,41(5):1613-1624.
APA	Liu, Hong-Bo,Zhou, Feng-Xi,Yue, Guo-Dong,&Hao, Lei-Chao.(2020).Propagation characteristics of thermoelastic wave in unsaturated soil.Yantu Lixue/Rock and Soil Mechanics,41(5),1613-1624.
MLA	Liu, Hong-Bo,et al."Propagation characteristics of thermoelastic wave in unsaturated soil".Yantu Lixue/Rock and Soil Mechanics 41.5(2020):1613-1624.